Discovery split charge

paulcashen · Posted: Tue Oct 11, 2011 12:19 am Post subject: Discovery split charge

I have bought 2 brand new batteries and I am thinking about a split charge now what I need to know is if when I have a split charge fitted if I run a winch of my second battery when the engine is off will it also drain my 1st battery ?

I don't think it will inwould just like to confirm this , thanks

jojo · Mud Obsessed Joined: 11 Aug 2007 Odometer: 5422

A decent split charge system will always protect your engine battery so that you can start the engine. Of course you can still run the engine battery flat in the usual ways - the sytem is not that idiot proof.

The winch should only use power from the winch battery. Have you got the right type of battery, a deep cycle type, for the winch?

J

teamidris · Posted: Tue Oct 11, 2011 6:56 pm Post subject:

Second battery for a winch? Sounds like a job for 'diode split charge' Very Happy

Neither can charge the other, as charge comes from the alternator.
It's not popular on here, but is the choice for marine use.
I'm pleased with mine Cool

paulcashen · Posted: Tue Oct 11, 2011 7:44 pm Post subject:

Av just been looking at these an they sound like the best thing to do.

Thanks for your advice.

burko_uk · Off-Road Guru Joined: 21 Oct 2005 Odometer: 1017

I followed teamidris advice too, and am very pleased with the result. Have a diode pack on both trucks now.

northumberlad · Guest

if I was going to do it again I'd use a voltage sensitive relay (see the link below) to protect the starter battery.

http://www.bepmarine.com/home-mainmenu-8/product-270/dual-sense-voltage-sensitive-relay-125amp-vsr-